the upload path does not appear to be valid tinymce

Can anyone help, how do I determine the storage location for my images that I uploaded from tinymce, because I experienced the error "the upload path does not appear to be valid" here is my tinymce script code

<script src="{{ asset('plugins/tinymce-4.6.1/tinymce.min.js') }}"></script>
<script>
        tinymce.init({
        schema: "html5",
        extended_valid_elements:"script[charset|async|defer|language|src|type],",    
        relative_urls : false,
        remove_script_host : false,
        convert_urls : true,
        selector: "textarea.tinymce",
        height: "300",
        image_caption: true,
        automatic_uploads: true,
        plugins: ["textcolor advlist autolink lists link image charmap print preview anchor", "searchreplace 		 
        visualblocks code fullscreen", "insertdatetime media table contextmenu paste jbimages"],
        toolbar: "insertfile undo redo | styleselect | numlist bullist | forecolor backcolor bold italic | alignleft 
        aligncenter alignright alignjustify | outdent indent | link image jbimages",
    });
</script>